Mark Cuban no longer holds a majority ownership stake in the Dallas Mavericks. He famously sold a controlling majority interest in the franchise to the Adelson family, led by Miriam Adelson, though he retained a minority share and continued to oversee basketball operations and team management decisions. His long tenure as the primary face and vocal owner of the Mavericks defined an entire era of modern NBA ownership, blending courtside passion with innovative business and media strategies.